There's just nothing interesting going on in the world of The Walking Dead besides zombies. The characters are not in a terribly interesting place, they are not trying to get somewhere, we don't know what happened to government, we've not seen any other interesting groups of people who are getting by somehow. I don't find the guys at the farm very interesting.
The major drama where I'm at is :
The major going-ons just don't seem terribly interesting, but perhaps they would be if the writers were good. But, I felt none of those things have been handled in a way that makes it particularly entertaining to watch and overall, I feel the zombie apocalypse should have more to offer when it comes to entertainment.